igor@402: \chapter{Installing Mercurial from source}
igor@402: \label{chap:srcinstall}
igor@402: 
igor@402: \section{On a Unix-like system}
igor@402: \label{sec:srcinstall:unixlike}
igor@402: 
igor@402: If you are using a Unix-like system that has a sufficiently recent
igor@402: version of Python (2.3~or newer) available, it is easy to install
igor@402: Mercurial from source.
igor@402: \begin{enumerate}
igor@402: \item Download a recent source tarball from
igor@402:   \url{http://www.selenic.com/mercurial/download}.
igor@402: \item Unpack the tarball:
igor@402:   \begin{codesample4}
igor@402:     gzip -dc mercurial-\emph{version}.tar.gz | tar xf -
igor@402:   \end{codesample4}
igor@402: \item Go into the source directory and run the installer script.  This
igor@402:   will build Mercurial and install it in your home directory.
igor@402:   \begin{codesample4}
igor@402:     cd mercurial-\emph{version}
igor@402:     python setup.py install --force --home=\$HOME
igor@402:   \end{codesample4}
igor@402: \end{enumerate}
igor@402: Once the install finishes, Mercurial will be in the \texttt{bin}
igor@402: subdirectory of your home directory.  Don't forget to make sure that
igor@402: this directory is present in your shell's search path.
igor@402: 
igor@402: You will probably need to set the \envar{PYTHONPATH} environment
igor@402: variable so that the Mercurial executable can find the rest of the
igor@402: Mercurial packages.  For example, on my laptop, I have set it to
igor@402: \texttt{/home/bos/lib/python}.  The exact path that you will need to
igor@402: use depends on how Python was built for your system, but should be
igor@402: easy to figure out.  If you're uncertain, look through the output of
igor@402: the installer script above, and see where the contents of the
igor@402: \texttt{mercurial} directory were installed to.
igor@402: 
igor@402: \section{On Windows}
igor@402: 
igor@402: Building and installing Mercurial on Windows requires a variety of
igor@402: tools, a fair amount of technical knowledge, and considerable
igor@402: patience.  I very much \emph{do not recommend} this route if you are a
igor@402: ``casual user''.  Unless you intend to hack on Mercurial, I strongly
igor@402: suggest that you use a binary package instead.
igor@402: 
igor@402: If you are intent on building Mercurial from source on Windows, follow
igor@402: the ``hard way'' directions on the Mercurial wiki at
igor@402: \url{http://www.selenic.com/mercurial/wiki/index.cgi/WindowsInstall},
igor@402: and expect the process to involve a lot of fiddly work.
igor@402: 
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